Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

XmlArrayAttribute::IsNullable Property

 

Gets or sets a value that indicates whether the XmlSerializer must serialize a member as an empty XML tag with the xsi:nil attribute set to true.

Namespace:   System.Xml.Serialization
Assembly:  System.Xml (in System.Xml.dll)

public:
property bool IsNullable {
	bool get();
	void set(bool value);
}

Property Value

Type: System::Boolean

true if the XmlSerializer generates the xsi:nil attribute; otherwise, false.

The XML schema specification for structures allows an XML document to explicitly signal that an element's content is missing. Such an element contains the attribute xsi:nil set to true. For more information, see the World Wide Web Consortium (www.w3.org) specification titled "XML Schema Part 1: Structures."

If the IsNullable property is set to true, the xsi:nil attribute is generated for class members that have been set to null. For example, if you set a field named MyStringArray to null, the XmlSerializer generates the following XML code.

<MyStringArray xsi:nil = "true" />

If the IsNullable property is false, no XML element is generated.

System_CAPS_noteNote

You cannot apply the IsNullable property to a member typed as a value type because a value type cannot contain null.

The following example contains two arrays: one with the IsNullable property set to true, and another with the IsNullable property set to false.

public ref class MyClass
{
public:

   [XmlArray(IsNullable=true)]
   array<String^>^IsNullableIsTrueArray;

   [XmlArray(IsNullable=false)]
   array<String^>^IsNullableIsFalseArray;
};

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top
Show:
© 2017 Microsoft